220434155 has 32 divisors (see below), whose sum is σ = 288054144. Its totient is φ = 161314816.

The previous prime is 220434127. The next prime is 220434161. The reversal of 220434155 is 551434022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 220434155 - 2¹⁰ = 220433131 is a prime.

It is a super-4 number, since 4×220434155⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 752189 + ... + 752481.

It is an arithmetic number, because the mean of its divisors is an integer number (9001692).

Almost surely, 2^220434155 is an apocalyptic number.

220434155 is a deficient number, since it is larger than the sum of its proper divisors (67619989).

220434155 is a wasteful number, since it uses less digits than its factorization.

220434155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 220434155 is about 14847.0251228992. The cubic root of 220434155 is about 604.0779205570.

Adding to 220434155 its reverse (551434022), we get a palindrome (771868177).

The spelling of 220434155 in words is "two hundred twenty million, four hundred thirty-four thousand, one hundred fifty-five".